At night an underwater scuba diver aims his flashlight beam toward the surface at an angle of 15 degrees with the normal.Upon emerging,the beam angle will be

Question

Quizplus · Accepted Answer

When the scuba diver aims the flashlight beam towards the surface at an angle of 15 degrees with the normal, it means that the angle of incidence is also 15 degrees. When the beam emerges from the water, it will refract or bend away from the normal since the speed of light is slower in water than in air. This means that the angle of refraction will be greater than the angle of incidence, so the beam angle will be more than 15 degrees. Therefore, the best choice is C.

At Night an Underwater Scuba Diver Aims His Flashlight Beam